One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(9,10)(11,13)(12,14)(15,16)(17,18,23,28,22,27,24,29)(19,21,31,30,26,20,25,32)(1,3)(2,6)(4,7)(5,8)(9,11,12,15)(10,13,14,16)(17,19)(18,20)(21,27)(22,26)(23,31)(24,25)(28,32)(29,30)(1,4,5,2)(3,7,8,6)(10,14)(13,16)(17,20,22,21)(18,25,27,31)(19,29,26,28)(23,32,24,30)(3,8)(6,7)(17,21,22,20)(18,26,27,19)(23,32,24,30)(25,28,31,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.